1 files changed, 1 insertions, 1 deletions
diff --git a/setup.py b/setup.py
index 91e9640c..05933c03 100644
--- a/setup.py
+++ b/setup.py
@@ -43,7 +43,7 @@ try:
         'install_requires': [
             'cryptography >= 0.5.4',
             'ecdsa >= 0.11',
-            'pyasn1',
+            'pyasn1 >= 0.1.7',
         ],
     }
 except ImportError: